Hot forming method of steel plate based on anti-oxidation coating and production line for implementing the method

Abstract

The invention discloses a steel plate hot forming method based on an anti-oxidation coating and a hot forming production line specially designed to implement the method. The method includes the following steps: cleaning the surface of the workpiece to ensure that there is no oil stain; using automatic spraying equipment to spray paint on the surface of the workpiece; heating the workpiece by heating equipment to make it reach the austenitizing temperature of the workpiece; Quickly move to the fast press, and quickly complete the stamping, mold clamping, pressure holding, quenching, and forming integration processes in the fast press, and the temperature of the workpiece is reduced from the austenitizing temperature to the horsepower during the processing. Tensile transformation temperature. The thermoforming production line includes automatic spraying equipment, heating equipment, fast press and transmission mechanism. The invention has the beneficial effects of solving the problem of scale generation in thermoforming, reducing the cost of thermoforming, higher precision and easier operation.

Description

technical field [0001] The invention relates to a hot forming method, in particular to a steel plate hot forming method based on an anti-oxidation coating, and to a hot forming production line implementing the method. Background technique [0002] Steel plate hot stamping technology is a kind of special high-strength steel plate heated to austenitic temperature, and then quickly moved to the mold and fast stamping, and the workpiece is guaranteed to be cooled by the mold (instead of air) under the pressure of the press. Quenching and cooling under the condition of high speed, so as to finally obtain a new forming process for ultra-high-strength stamping parts (martensitic structure, with a strength of about 1500MPa or even higher). The key processes of the thermoforming process are heating, stamping, pressure holding and cooling, and the last three parts are completed in one step. For steel plates with small thickness and large surface area, oxide skin will be produced duri...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hot-melt roller that can not only solve the problem of bonding between the Al-Si coated ultra-high-strength steel plate and the magnetic roller during the heating process, but also ensure the prevention of oxidation at a low cost, simple manufacturing process, and high processing accuracy. Forming method to solve the problem that it is difficult to avoid the generation of scale in existing thermoforming or the problem that the cost is too high and the accuracy is difficult to guarantee despite avoiding the generation of scale

Simultaneously, the present invention overcomes the technical problems such as the adhesion problem between the existing Al-Si coated ultra-high-strength steel plate and the cover magnetic roller and the high price of the atmosphere protection furnace.

Images